Bigger fuel tank

[slick]

I have a question. I just bought my GMC truck and asked the salesperson if the service department would install the Titan fuel tank. He came back and said it would void my warranty. I had a Ford F-150 diesel and had a 40-gallon tank installed the week I bought it in 2019, and I never had a problem. Does anyone have any guidance on this? I want the 43-gallon tank installed, but I do not want to cause a warranty problem.

 

[gemarsh]

I have a question. I just bought my GMC truck and asked the salesperson if the service department would install the Titan fuel tank. He came back and said it would void my warranty. I had a Ford F-150 diesel and had a 40-gallon tank installed the week I bought it in 2019, and I never had a problem. Does anyone have any guidance on this? I want the 43-gallon tank installed, but I do not want to cause a warranty problem.

Welcome.

What part of the warranty would be voided? Fuel system or the fuel tank? If the aftermarket tank used the oem filter system, I don't see a warranty issue with the fuel system.